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Britannica Sources used in this answer

What position did Xerxes I hold in Babylonia before becoming king?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Bas-relief detail of Xerxes I wearing a robe and crown, holding a flower, from the north courtyard of the treasury at Persepolis, now in the Archaeological Museum in Tehran.
Xerxes I

Before ascending to the Persian throne in 486 BCE, Xerxes I had governed Babylonia for approximately 12 years.1